Door-lock.



D. HILEMADL DOOR LOCK. APPLICATION 211,111) H0116, 1907.

Patented BM. 1?, 3908.

2 SHEETS-SHEET 1.

D. HILEMAN.

DOOR LOCK, PPLIGATION FILED H0116, 1907.

Ptented Nov. 1'7, 1968.

2 BHEETSSHEET 2.

UNITED STATES A'PE T.

DAVID HILEMAN, or MONONGAH, wn'sr vIRGINiii f A noonoon.

Specificatidn of Letters Patent.

Application filed Novembenm, 1907. Serial masses. 1 1

T all whom it may concern: 7 Be 1t known that 1, DAVID HILEMAN, a

citizen of the United States, residing at.

- Monongalnin the county ofMarion, State of lVest Virginia,have invented certain new and useful Improvements in Door-Locks;

and I do hereby declare the following to be connection for the reason that guests in hotels frequently-lose their keys and areunable to. look their doors until a new key is furnished. Aside from this, however, the bolt holding device embodied in the lockin sures further safety, as no key of any description can be used to retract the lock bolt when the device is set.

In the accompanying drawings, Figure l. is a viewin elevation of a ortion of a door showing the application o my lock thereto, Fig. 2 is an edge view of the door and lock, Fig. 3-is a view in elevation of thedevice removed from the door, the casing for the latch bolt, however, being shown in section, Fig. 4 is a sectional view through the latch casing showing the latch bolt in top plan, Fig. 5 is'a-n end view of the latch casing,

and, 6, is "a vertical .sectional view through the door of the latch bolt and its casing. p

In the drawings, there is shown a portion of a door 10, to opposite sides of which arosecured the usual plates 11 provided with key and spindle openings, as is usual. These plates also include extensions 12, which are apertured, as at 13, and the purpose of these extensions and theapertures therein will be presently madeapparent.

Thelock proper comprises a plate 14 from one face of which extend cylin ricalbarrels 15 and 16 for the latch and lock bo1ts,res'p.ectivel The said barrels are each formed of a pair of semi-cylindrical sections, one sec tion 17 of each barrel beingfornied integral with the plate and the ot er section 1 8 of sition against its respective fixed section and heldthereto by means-of a screw-l9; .s This screw 19, in; each instance, isl'engaged through an car 20 formed inte'gral. with-"the removablesection at one "end thereofrand having. flush receptionin a countersink? 21 formed in the corresponding end of thefixed section. It is to be understood, of course,

that these barrels are received inboresvof suitable contour formed in. the ed 'e of the door to which the lock is to be app ied, and

that by" reason of the fact that thelock and latch barrels are cylindrical, mortising of each barrel being adaptedto- 'be i39- I the door is obviated, and that consequently the dooris'not weakened totheexte'nt that .it would be if the usual rectangular lock casing were employed.

The latch proper of the device will nowbe described. A block including a cylindrical portion 22 is slidably disposed in the barrel 15,- and the said block further includes a flattened portion 23, which is of; hollow construction as indicated by the numeral 24 for the reception of the usual hub 25 carried upon the. usual form of spindle 26, it being understood that" the said spindle passes through the hollow or open portion of the block. The walls of this portion of the blockare slotted, asindicated at 27 and into these slots project the lugs 28 formed upon the hub 25, the slots being so restricted that when thespindle is turned, one or the other of the lugs will abut one end of one of the slots and serve to retract the block.

Formed within each of the sections of the barrel 1-5 is a semi-circular partition 29, which has its straight edge notched, .as at 30, for the passage of a latch bolt 31,"which has swivel connection with the cylindrical portion of the block 22 and is rovided at its outer end with a beveledhear 32, the latter being slidably received through a rectangular opening 33 formed in the plate 14. The

head iss'houldered as at 34, to limit its movement from the barrel in which it is located *and'this shouldered portion of the head is recessed, asat 35, for the reception of one end if a spring 36- which spring bears at its opposite end against the partition formed in the barrel. From the foregoing description the 1 sprin%, ts norma and that the bolt will return to position as soon as the spindl is released, as isthe case in the ordinary for s of locks .now on the market.

Now in order that the bolt may be held against retraction when so desired, I have formed in the shouldered portion of the latch head-a socket 37, which, when the latch bolt is in its norinal position, registers with the openin 13 in the upperextension 12 upon the p ate 11, and I have also provided a pin 38 which is removably inserted in the said socket. It will sufiice to say that the lock proper of the device includes the usual form of lock bolt 38' which is likewise pro- Vided with a socket 39 for the reception of a pin 40, which is to be, removably inserted therein and through the opening 13 in the lower extension 12 upon the plate 11, the function of the pin being the same ineither case. I

' bolt slidable in the barrel to one side of the 1 What is claimed, isp 'A latch comprising'a cylindrical barrel formed between its ends with a partition, a

5 partition, a s' ring uponthe stem of the bolt 2 between the' lead of the bolt and the said partition, a'cylindrical block slida-ble in the barrel to the other side of said partition, the said block being formed with" a flat-sided open extension, the spaced portion of the extension being slotted, a spindle, and a hub upon the spindle and working between said spaced portion of the extension, the said hub being formed with a lug which seats in said 5 s 0t.

In testimony whereof, I afiix my signature, in presence of two witnesses.

DAVID HILEMAN. Witnesses:

Gr VJMANLY, J AMES A. WATKINS. 

